Precision Navigation and Pointing Gyroscope www.pinpoint-gyro.com CRM100 Technical Datasheet 1 General Description PinPoint is a single-axis MEMS angular rate sensor (gyro) capable of measuring angular velocity up to a maximum of 1,000/s which has two output modes an analogue voltage signal which is linearly proportional to angular speed, and a digital signal in Actual size SPI protocol. The choice of output mode analogue or digital, is determined by the user when connecting it to the users host PCBA details of the electrical interface between PinPoint and the host PCBA are given in Section 7. Features PinPoint is available in several con gurations Small (5.7 x 4.8 x 1.2mm) a) CRM100 which measures angular velocity about Proven and robust silicon MEMS vibrating ring gyro an axis perpendicular to the plane of the host PCBA, referred to as in-plane sensing, b) CRM200 which Low bias instability (24/hr) over short integration measures angular velocity about an axis which period (<1s) is parallel to the plane of the host PCBA, referred Low Angular Random Walk (0.28/hr) to as orthogonal sensing and c) CRM120 which In-plane, orthogonal and 20 inclined sensing options measures angular velocity about an axis 20 off the (CRM100, CRM200 and CRM120) perpendicular for applications where the host PCBA is a 20 an inclined angle. This datasheet relates to part User selectable dynamic ranges 75/s, 150/s, number CRM100. 300/s and 900/s (maximum 1,000/s) With a combination of CRM100 and CRM200 it is Analogue and Digital ( SPI ) output modes possible for the user to measure angular rate of User adjustable bandwidth to 160Hz multiple axes (e.g. any combination of pitch, yaw and 3V supply roll) from a single host PCBA. Low power consumption (4mA) PinPoint is supplied as a PCBA surface mountable High shock and vibration rejection LCC ceramic packaged device. It comprises ve main Hermetically sealed ceramic LCC surface mount components silicon MEMS ring Sensor, Pedestal, package for temperature and humidity resistance ASIC, Package Base and Lid. More details of the construction are given in Section 13. Integral temperature sensor There are eight actuators / transducers distributed Low integration cost evenly around the perimeter of the silicon MEMS ring. Design tools and resources available Located about its primary axes are a single pair of RoHS compliant primary drive actuators and a single pair of primary AEC Q100 tested pick-off transducers. Located about its secondary axes (at 45 to the primary) are two pairs of secondary pick-off transducers see Figure 1.1. Applications The primary drive actuators and primary pick-off Automotive in-car navigation transducers act together in a closed-loop system to Precision GPS vehicle and personal navigation aiding excite and control the ring primary operating vibration amplitude and frequency. Vehicle yaw, pitch and roll rate sensing Secondary pick-off transducers detect radial movement Gesture sensing at the secondary axes, the magnitude of which is Motion tracking proportional to the angular speed of rotation and from Pointing devices which the gyro derives angular rate. Precision agriculture More information about the principles of operation are Antenna stabilisation given in Section 13. Industrial and robotics Copyright 2013 Silicon Sensing Systems Limited. All rights reserved. Silicon Sensing is an Atlantic Inertial Systems, Sumitomo Precision Products joint venture company. Speci cation subject to change without notice. CRM100-00-0100-132 Rev 8 Page 1Precision Navigation and Pointing Gyroscope www.pinpoint-gyro.com CRM100 Technical Datasheet C3 0.1F 2.7 to 3.6V Vref cap Vdd Amplitude Vref PPO Driver C1 0.1F 10F O Vss Rate O/P Rate Out Real SPO QUAD PROG Calibration Trim Sets Reset POR Interface Control BIT ADC Interface BW cap C2 (0.56nF to 270nF) C.G.18391 Figure 1.1 CRM100 Functional Block Diagram 5.70 1.18 4- (0.10) 4- 0.90 P x 2 = 1.80 C- 0.30 13 14 15 16 1 13 1 12 2 17 11 3 +ve 4 10 9876 5 5 9 12 - 0.5 4 - 1.05 All dimensions in millimetres. 4 - (R 0.25) (0.10) 12 - (R 0.15) C.G. 18364 Figure 1.2 CRM100 Overall Dimensions Copyright 2013 Silicon Sensing Systems Limited. All rights reserved. Silicon Sensing is an Atlantic Inertial Systems, Sumitomo Precision Products joint venture company. Speci cation subject to change without notice. Page 2 CRM100-00-0100-132 Rev 8 4.78 MODE SEL 4- (0.10) 12 - 1.00 1.87 Data In / SEL1 Data Out / BIT Out Dclk / SEL0 Factory / SS 4 - 0.70